# Probability, basic principles

Not what you're looking for?

This problems is from 400 level probability class but introductory course. Please specify the terms you use (if necessary) and explain each step of your solutions. Thank you very much.

18. 45% of the students at U of M do neither have a tattoo nor a body piercing (other than an ear piercing). 40% of the students at U of M have a tattoo. 30% of the students at U of M have a body piercing. One student is randomly selected, what is the probability that this student has

a. a tattoo or a body piercing?

b. a tattoo and a body piercing?

c. only a tattoo or only a body piercing?

##### Purchase this Solution

##### Solution Summary

In this solution, probabilities of the events in question are found using basic priciples of probability.

##### Solution Preview

In this solution, probabilities of the events in question are found using basic priciples of probability. Please see the attached Word document for the solution.

18. 45% of the students at U of M do neither have a ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

##### Probability Quiz

Some questions on probability

##### Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.